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Fair Value Measurements - Narrative (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Apr. 30, 2026 USD ($) | Feb. 28, 2026 USD ($) | Jan. 31, 2026 USD ($) | Feb. 28, 2025 USD ($) | Jun. 30, 2026 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2026 USD ($) payment | Jun. 30, 2025 USD ($) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Sep. 30, 2024 USD ($) | Nov. 30, 2023 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  | $ 1 | $ 334 | $ 16 | $ 704 |  |  |  |
Acquisition-related retention expense and contingent consideration |  |  |  |  | 230 | 795 | 379 | 1,222 |  |  |  |
Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on change in fair value of interest rate swap |  |  |  |  | 100 | (100) | 100 | (200) |  |  |  |
Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Fair value of the interest rate swap |  |  |  |  | 100 |  | 100 |  | $ 100 |  |  |
Industrial Air Transaction |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, liability |  |  |  |  | 6,500 |  | 6,500 |  |  |  |  | $ 3,200
Business combination, payment for contingent consideration liability |  | $ 3,500 |  | $ 3,000 |  |  |  |  |  |  |  |
Industrial Air Transaction | Earn Out Payment One |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, liability |  |  |  |  | 3,000 |  | $ 3,000 |  |  |  |  |
Number of earnout tranches | payment |  |  |  |  |  |  | 2 |  |  |  |  |
Earnout period |  |  |  |  |  |  | 12 months |  |  |  |  |
Industrial Air Transaction | Earn Out Payment One | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gross profits from acquired companies |  |  |  |  |  |  | $ 7,600 |  |  |  |  |
Industrial Air Transaction | Earn Out Payment Two |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, liability |  |  |  |  | 3,500 |  | $ 3,500 |  |  |  |  |
Earnout period |  |  |  |  |  |  | 12 months |  |  |  |  |
Industrial Air Transaction | Earn Out Payment Two | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gross profits from acquired companies |  |  |  |  |  |  | $ 8,800 |  |  |  |  |
Kent Island |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, liability |  |  |  |  | 5,000 |  | 5,000 |  |  |  | $ 4,400 |
Business combination, payment for contingent consideration liability |  |  | $ 2,500 |  |  |  |  |  |  |  |  |
Kent Island | Earn Out Payment One |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, liability |  |  |  |  | 2,500 |  | $ 2,500 |  |  |  |  |
Number of earnout tranches | payment |  |  |  |  |  |  | 2 |  |  |  |  |
Earnout period |  |  |  |  |  |  | 12 months |  |  |  |  |
Kent Island | Earn Out Payment One | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gross profits from acquired companies |  |  |  |  |  |  | $ 3,300 |  |  |  |  |
Kent Island | Earn Out Payment Two |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Earnout period |  |  |  |  |  |  | 12 months |  |  |  |  |
Kent Island | Earn Out Payment Two | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gross profits from acquired companies |  |  |  |  |  |  | $ 200 |  |  |  |  |
Consolidated Mechanical |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, liability |  |  |  |  | 2,000 |  | 2,000 |  |  | $ 800 |  |
Business combination, payment for contingent consideration liability | $ 900 |  |  |  |  |  |  |  |  |  |  |
Consolidated Mechanical | Earn Out Payment One |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, liability |  |  |  |  | 1,000 |  | $ 1,000 |  |  |  |  |
Number of earnout tranches | payment |  |  |  |  |  |  | 2 |  |  |  |  |
Earnout period |  |  |  |  |  |  | 12 months |  |  |  |  |
Consolidated Mechanical | Earn Out Payment One | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gross profits from acquired companies |  |  |  |  |  |  | $ 6,800 |  |  |  |  |
Consolidated Mechanical | Earn Out Payment Two |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Earnout period |  |  |  |  |  |  | 12 months |  |  |  |  |
Consolidated Mechanical | Earn Out Payment Two | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gross profits from acquired companies |  |  |  |  |  |  | $ 6,800 |  |  |  |  |
Jake Marshall Transaction |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Acquisition-related retention expense and contingent consideration |  |  |  |  | 100 | 800 | 200 | 1,200 |  |  |  |
Level 1 |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  | 100 | $ 300 | 100 | $ 700 |  |  |  |
Level 3 | A&R Wintrust Term Loan - term loan payable in quarterly installments of principal, (commencing in December 2021) plus interest through February 2026 |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Fair value of debt |  |  |  |  | $ 17,500 |  | $ 17,500 |  |  |  |  |

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